To be indifferent to criticism and ridicule; to allow people to mock and scold one as they please.
他坚持自己的原则，即使面对外界的质疑和嘲讽，也只是笑骂由人，继续前行。
He sticks to his principles, and even when faced with external doubts and mockery, he simply lets people laugh and scold, continuing his journey forward.
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